Damping of inhomogeneities in neutralino dark matter

The lightest supersymmetric particle, most likely the neutralino, might account for a large fraction of dark matter in the Universe.We show that the primordial spectrum of density fluctuations in neutralino cold dark mat
The lightest supersymmetric particle, most likely the neutralino, might account for a large fraction of dark matter in the Universe.We show that the primordial spectrum of density fluctuations in neutralino cold dark matter (CDM) has a sharp cut-off due to two damping mechanisms: collisional damping during the kinetic decoupling of the neutralinos at (10 MeV) and free streaming after last scattering of neutralinos. The cut-off in the primordial spectrum defines a minimal mass for CDM objects in hierarchical structure formation. For typical neutralino and sfermion masses the first gravitionally bound neutralino clouds have masses above 10 -6 M .
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Metadaten
Author:Dominik J. Schwarz, Stefan Hofmann, Horst Stöcker
URN:urn:nbn:de:hebis:30-21431
Document Type:Article
Language:English
Date of Publication (online):2005/11/17
Year of first Publication:2001
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/11/17
Tag:dunkle Materie ; neutralino; supersymmetrische Partikel
dark matter ; neutralino; supersymmetric particle
Source:In *Budapest 2001, High energy physics* hep2001/20. [astro-ph/0110601]
HeBIS PPN:22645424X
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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